Discussion.—To conclude, we predict the non-Hermitian skin effect of chirally coupled magnetic wires that are mediated by the spin waves of significant damping, which overcomes the strong interference brought by the propagation of the traveling waves. This leads to functionalities such as non-local spin-wave excitation and giantly sensitive detection of microwaves, and makes it easier to achieve nonlinear regime of magnons with a small power. The generalization of our scenario to chiral photonics [1]}, [2]}, plasmonics
[3]}, [4]}, [5]}, and acoustics [6]}, [7]} may promote the performace of sensors for detection of small signals.
